Bordi, Isabella; Fraedrich, Klaus; Petitta, Marcello; … - In: Water Resources Management 20 (2006) 6, pp. 899-915
component analysis (PCA) to the SPI time series. Results suggest that on the global scale, the two re-analyses agree in their … analyses carried out with the two data sets, we studied the leading space-time variability of drought by applying the principal …